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Power Programmierung
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Power-Programmierung (Tewi)(1994).iso
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pctchnqs
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1991
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number1
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l1.c
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1991-01-13
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866b
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25 lines
/* Finds and returns the greatest common divisor of two positive
integers. Works by trying every integral divisor between the
smaller of the two integers and 1, until a divisor that divides
both integers evenly is found. All C code tested with Microsoft
C 5.0 */
unsigned int gcd(unsigned int int1, unsigned int int2) {
unsigned int temp, trial_divisor;
/* Swap if necessary to make sure that int1 >= int2 */
if (int1 < int2) {
temp = int1;
int1 = int2;
int2 = temp;
}
/* Now just try every divisor from int2 on down, until a common
divisor is found. This can never be an infinite loop because
1 divides everything evenly */
for (trial_divisor = int2; ((int1 % trial_divisor) != 0) ||
((int2 % trial_divisor) != 0); trial_divisor--)
;
return(trial_divisor);
}